feat: adding lesson_08 homework and lesson_09 pre-work (#275)

* feat: adds lesson_08 content and lesson_09 pre-work.

* chore: updates code format

* chore: adjusting lesson 8 code.

lesson_08/README.md

@@ -13,4 +13,7 @@ Please review the following resources before lecture:
 
 ## Homework
 
-TODO(anthonydmays): Finish this.
+- [ ] Memorize the `printPermutations` and `reverseString` methods in [algos_app][algos-app].
+- [ ] Do pre-work for [lesson 09](/lesson_09/).
+
+[algos-app]: ./algos/algos_app/src/main/java/com/codedifferently/lesson08/Lesson08.java

lesson_08/algos/.editorconfig

@@ -0,0 +1,11 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+insert_final_newline = true
+organize_imports = true
+trim_trailing_whitespace = true
+quote_type = single

lesson_08/algos/.eslintignore

@@ -0,0 +1 @@
+build/

lesson_08/algos/.prettierignore

@@ -0,0 +1,3 @@
+# Ignore artifacts:
+build
+coverage

lesson_08/algos/.prettierrc

@@ -0,0 +1 @@
+{}

lesson_08/algos/eslint.config.js

@@ -0,0 +1,28 @@
+// @ts-check
+
+import eslint from '@eslint/js';
+import stylistic from '@stylistic/eslint-plugin';
+import eslintConfigPrettier from 'eslint-config-prettier';
+import tseslint from 'typescript-eslint';
+
+export default tseslint.config(
+  eslint.configs.recommended,
+  ...tseslint.configs.strict,
+  ...tseslint.configs.stylistic,
+  eslintConfigPrettier,
+  {
+    ignores: ['build'],
+    plugins: { '@stylistic': stylistic },
+    rules: {
+      '@typescript-eslint/interface-name-prefix': 'off',
+      '@typescript-eslint/explicit-function-return-type': 'off',
+      '@typescript-eslint/no-explicit-any': 'error',
+      '@typescript-eslint/no-extraneous-class': 'off',
+      '@stylistic/quotes': [
+        'error',
+        'single',
+        { avoidEscape: true, allowTemplateLiterals: false },
+      ],
+    },
+  },
+);

lesson_08/algos/jest.config.js

@@ -0,0 +1,11 @@
+/** @type {import('ts-jest').JestConfigWithTsJest} **/
+export default {
+  testEnvironment: 'node',
+  transform: {
+    '^.+.tsx?$': ['ts-jest', { useESM: true }],
+  },
+  moduleNameMapper: {
+    '^(\\.\\.?\\/.+)\\.js$': '$1',
+  },
+  extensionsToTreatAsEsm: ['.ts'],
+};